Canadian Boating Practice Exam

A vessel running aground is typically in a state of emergency and has a potential for a collision. Therefore, the sound signal required should be distinctive and able to capture the attention of other vessels in the vicinity. Option A, which suggests two prolonged blasts followed by one short blast, is the signal for a vessel being towed, not a vessel running aground. Option C, continuous ringing, is used for vessels restricted in their ability to maneuver, not vessels running aground. Option D, one prolonged blast every minute, is the signal for a vessel anchored, not a vessel running aground. The correct answer, B, is the signal for a vessel in an emergency situation, which would include a vessel running aground.